JavaScript代码片段二

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JavaScript统计文字个数、特殊字符转义、动态插入js代码、身份证验证

统计文字个数

function wordCount(data) {

        var pattern = /[a-zA-Z0-9_\u0392-\u03c9]+|[\u4E00-\u9FFF\u3400-\u4dbf\uf900-\ufaff\u3040-\u309f\uac00-\ud7af]+/g;

         var m = data.match(pattern);

        var count = 0;

        if( m === null ) return count;

        for (var i = 0; i < m.length; i++) {

           if (m[i].charCodeAt(0) >= 0x4E00) {

             count += m[i].length;

           } else {

             count += 1;

           }

         }

        return count;

}

wordCount(‘中文内容’);//使用

特殊字符转义

function htmlspecialchars (str) {

        var str = str.toString().replace(/&/g, "&amp;").replace(/</g, "&lt;").replace(/>/g, "&gt;").replace(/"/g, '&quot;');

        return str;

}

动态插入js

function injectScript(src) {

         var s, t;

        s = document.createElement('script');

        s.type = 'text/javascript';

        s.async = true;

        s.src = src;

        t = document.getElementsByTagName('script')[0];

        t.parentNode.insertBefore(s, t);

}

身份证验证

function chechCHNCardId(sNo) {

        if (!this.regExpTest(sNo, /^[0-9]{17}[X0-9]$/)) {

                return false;

        }

        sNo = sNo.toString();

        var a, b, c;

        a = parseInt(sNo.substr(0, 1)) * 7 + parseInt(sNo.substr(1, 1)) * 9 + parseInt(sNo.substr(2, 1)) * 10;

         a = a + parseInt(sNo.substr(3, 1)) * 5 + parseInt(sNo.substr(4, 1)) * 8 + parseInt(sNo.substr(5, 1)) * 4;

        a = a + parseInt(sNo.substr(6, 1)) * 2 + parseInt(sNo.substr(7, 1)) * 1 + parseInt(sNo.substr(8, 1)) * 6;

        a = a + parseInt(sNo.substr(9, 1)) * 3 + parseInt(sNo.substr(10, 1)) * 7 + parseInt(sNo.substr(11, 1)) * 9;

        a = a + parseInt(sNo.substr(12, 1)) * 10 + parseInt(sNo.substr(13, 1)) * 5 + parseInt(sNo.substr(14, 1)) * 8;

        a = a + parseInt(sNo.substr(15, 1)) * 4 + parseInt(sNo.substr(16, 1)) * 2;

        b = a % 11;

        if (b == 2) {

                 c = sNo.substr(17, 1).toUpperCase();

        } else {

                c = parseInt(sNo.substr(17, 1));

         }

        switch (b) {

                 case 0:

                if (c != 1) {

                        return false;

                }

                break;

                case 1:

                if (c != 0) {

                        return false;

                }

                break;

                case 2:

                if (c != "X") {

                        return false;

                }

                break;

                case 3:

                if (c != 9) {

                        return false;

                }

                break;

                case 4:

                if (c != 8) {

                        return false;

                }

                 break;

                case 5:

                if (c != 7) {

                        return false;

                 }

                break;

                 case 6:

                if (c != 6) {

                        return false;

                 }

                 break;

                 case 7:

                 if (c != 5) {

                         return false;

                 }

                 break;

                case 8:

                if (c != 4) {

                        return false;

                 }

                break;

                 case 9:

                if (c != 3) {

                        return false;

                }

                break;

                case 10:

                 if (c != 2) {

                         return false;

                };

        }

        return true;

}

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